Hydrogen production plant and method of controlling a hydrogen production plant

Abstract

The application discloses a hydrogen production device and a control method thereof, and belongs to the technical field of hydrogen production. The hydrogen production device comprises an electrolytic cell and a steam generation device. The first steam output end of the steam generation device is connected with an electrolyte circulating system of the hydrogen production device. The steam generation device generates steam, which is input to the electrolyte circulating system through the first steam output end, so as to increase the electrolyte temperature of the electrolytic cell. The hydrogen production device can safely and efficiently improve the hydrogen production efficiency during startup, and effectively shorten the time required for full-load hydrogen production of the hydrogen production device.

Description

Technical Field

[0001] This application belongs to the field of hydrogen production technology, and in particular relates to a hydrogen production device and a control method for the hydrogen production device. Background Technology

[0002] In the electrolysis hydrogen production process, the cold start time is relatively long. During cold start, the electrolyzer cannot quickly reach full capacity to produce hydrogen, resulting in low hydrogen production efficiency and poor coupling with renewable energy sources. In addition, the hydrogen produced by electrolysis at the beginning of cold start is substandard hydrogen, which needs to be vented, significantly reducing hydrogen production efficiency.

[0003] How to safely and efficiently improve hydrogen production efficiency during startup is a problem that urgently needs to be solved in this field. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a hydrogen production device and a control method for the hydrogen production device, which can safely and efficiently improve the hydrogen production efficiency during startup and effectively shorten the time required for the hydrogen production device to produce hydrogen at full load.

[0005] In a first aspect, this application provides a hydrogen production apparatus, comprising:

[0006] Electrolytic cell;

[0007] A steam generating device is provided, wherein the first steam output end of the steam generating device is connected to the electrolyte circulation system of the hydrogen production device, and the steam generated by the steam generating device is input into the electrolyte circulation system through the first steam output end to raise the electrolyte temperature of the electrolytic cell.

[0008] According to the hydrogen production device of this application, the first steam output end of the steam generating device is connected to the electrolyte circulation system, and the steam is introduced into the electrolyte circulation system. The electrolyte in the electrolyzer heats up rapidly, which can safely and efficiently improve the hydrogen production efficiency at startup and effectively shorten the time required for the hydrogen production device to produce hydrogen at full load.

[0009] According to one embodiment of this application, it also includes:

[0010] The purification equipment includes an electrolytic cell connected to the purification equipment and a second steam output terminal of a steam generating device connected to the purification equipment.

[0011] According to one embodiment of this application, the steam generating device further includes a third steam output terminal, which is connected to the heat demand terminal.

[0012] According to one embodiment of this application, it also includes:

[0013] A hydrogen separator and an oxygen separator are provided, wherein the input end of the hydrogen separator is connected to the hydrogen output end of the electrolytic cell, and the input end of the oxygen separator is connected to the oxygen output end of the electrolytic cell.

[0014] The hydrogen separator and the oxygen separator are connected by a manifold, and the first steam output end is connected to the manifold.

[0015] According to one embodiment of this application, it also includes:

[0016] A hydrogen separator and an oxygen separator are provided, wherein the input end of the hydrogen separator is connected to the hydrogen output end of the electrolytic cell, and the input end of the oxygen separator is connected to the oxygen output end of the electrolytic cell.

[0017] The first steam output terminal is connected to the hydrogen separator and the oxygen separator, respectively.

[0018] Secondly, this application provides a control method for a hydrogen production device, the hydrogen production device including an electrolyzer and a steam generating device, wherein a first steam output terminal of the steam generating device is connected to the electrolyte circulation system of the hydrogen production device, the method comprising:

[0019] When the electrolyzer is not in operation to produce hydrogen, the temperature of the first electrolyte in the electrolyzer is obtained.

[0020] If the temperature of the first electrolyte is lower than the target temperature threshold, the first steam flow rate is determined based on the temperature of the first electrolyte and the target temperature threshold.

[0021] Steam is generated by the steam generating device according to the first steam flow rate and input into the electrolyte circulation system through the first steam output terminal to raise the electrolyte temperature of the electrolytic cell.

[0022] When the electrolyte temperature in the electrolyzer is greater than or equal to the target temperature threshold, the electrolyzer is controlled to start hydrogen production.

[0023] According to the control method of the hydrogen production device of this application, before starting hydrogen production in the electrolyzer, the steam flow rate is precisely matched according to the temperature of the first electrolyte and the target temperature threshold, and the steam is introduced into the electrolyte circulation system. The electrolyte in the electrolyzer heats up rapidly, which can safely and efficiently improve the hydrogen production efficiency at startup and effectively shorten the time required for the hydrogen production device to produce hydrogen at full load.

[0024] According to one embodiment of this application, the hydrogen production apparatus further includes a purification device, the electrolyzer is connected to the purification device, the second steam output terminal of the steam generating device is connected to the purification device, and after controlling the electrolyzer to start hydrogen production, the method further includes:

[0025] Obtain the first required heat from the purification device;

[0026] Based on the first required heat, determine the second steam flow rate;

[0027] Steam is generated by the steam generating device according to the second steam flow rate and input to the purification equipment through the second steam output terminal.

[0028] According to one embodiment of this application, obtaining the first required heat of the purification device includes:

[0029] Obtain the current temperature information and set temperature information of the purification equipment, and obtain the current operating status of the electrolytic cell;

[0030] Based on the current temperature information, the set temperature information, and the current operating status, the first required heat is determined.

[0031] According to one embodiment of this application, the third steam output terminal of the steam generating device is connected to the heat demand terminal, and the method further includes:

[0032] Obtain the second required heat at the heat-demanding end;

[0033] The third steam flow rate is determined based on the second required heat.

[0034] Steam is generated by the steam generating device according to the third steam flow rate and input to the heat demand end through the third steam output terminal.

[0035] According to one embodiment of this application, after obtaining the first electrolyte temperature of the electrolytic cell, the method further includes:

[0036] When the temperature of the first electrolyte is greater than or equal to the target temperature threshold, the electrolyzer is controlled to start hydrogen production.

[0037] Thirdly, this application provides a control device for a hydrogen production apparatus, the hydrogen production apparatus including an electrolyzer and a steam generating device, wherein a first steam output terminal of the steam generating device is connected to the electrolyte circulation system of the hydrogen production apparatus, and the control device includes:

[0038] The acquisition module is used to acquire the first electrolyte temperature of the electrolyzer when the electrolyzer is not started to produce hydrogen.

[0039] The first processing module is configured to determine the first steam flow rate based on the first electrolyte temperature and the target temperature threshold when the first electrolyte temperature is lower than the target temperature threshold.

[0040] The second processing module is used to control the steam generating device to generate steam according to the first steam flow rate, and input the steam to the electrolyte circulation system through the first steam output terminal to raise the electrolyte temperature of the electrolytic cell;

[0041] The third processing module is used to control the electrolyzer to start hydrogen production when the electrolyte temperature of the electrolyzer is greater than or equal to the target temperature threshold.

[0042] According to the control device of the hydrogen production apparatus of this application, before starting hydrogen production in the electrolyzer, the steam flow rate is precisely matched according to the temperature of the first electrolyte and the target temperature threshold, and the steam is introduced into the electrolyte circulation system. The electrolyte in the electrolyzer heats up rapidly, which can safely and efficiently improve the hydrogen production efficiency at startup and effectively shorten the time required for the hydrogen production apparatus to produce hydrogen at full load.

[0043] Fourthly, this application provides an electronic device including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the control method of the hydrogen production device as described in the second aspect above.

[0044] Fifthly, this application provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the control method for the hydrogen production apparatus as described in the second aspect above.

[0045] In a sixth aspect, this application provides a computer program product, including a computer program that, when executed by a processor, implements the control method for a hydrogen production device as described in the second aspect above.

[0046] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0047] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0048] Figure 1 This is one of the schematic flowcharts of the control method for the hydrogen production device provided in the embodiments of this application;

[0049] Figure 2 This is a second schematic flowchart of the control method for the hydrogen production device provided in the embodiments of this application;

[0050] Figure 3 This is the third schematic flowchart of the control method for the hydrogen production device provided in the embodiments of this application;

[0051] Figure 4 This is a schematic diagram of the structure of the control device of the hydrogen production apparatus provided in the embodiments of this application;

[0052] Figure 5 This is one of the structural schematic diagrams of the hydrogen production device provided in the embodiments of this application;

[0053] Figure 6 This is a second schematic diagram of the hydrogen production device provided in the embodiments of this application;

[0054] Figure 7 This is the third schematic diagram of the hydrogen production device provided in the embodiments of this application;

[0055] Figure 8 This is the fourth schematic diagram of the hydrogen production device provided in the embodiments of this application;

[0056] Figure 9 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application.

[0057] Figure label:

[0058] The control device 400 includes an acquisition module 410, a first processing module 420, a second processing module 430, and a third processing module 440.

[0059] Electrolyzer 510, hydrogen separator 521, oxygen separator 522, electrolyte heat exchanger 530, electrolyte circulation pump 540, hydrogen scrubber 551, oxygen scrubber 552, hydrogen heat exchanger 561, oxygen heat exchanger 562, first hydrogen-water separator 571, second hydrogen-water separator 572, third hydrogen-water separator 573, fourth hydrogen-water separator 574, first oxygen-water separator 580, steam generating device 590.

[0060] Deoxygenation tower 610, first drying tower 621, second drying tower 622, third drying tower 623, first heater 631, second heater 632, first cooler 641, second cooler 642, heat-requiring end 650.

[0061] First switching valve 711, second switching valve 712, third switching valve 713, regulating valve 720, first temperature sensor 731, second temperature sensor 732, third temperature sensor 733, regeneration gas flow meter 740. Detailed Implementation

[0062] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0063] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0064] The control method, control device 400, electronic equipment, and readable storage medium of the hydrogen production device provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0065] This application provides a hydrogen production device.

[0066] like Figure 5 As shown, the hydrogen production apparatus of this application embodiment includes an electrolyzer 510 and a steam generating device 590.

[0067] Among them, the electrolytic cell 510 can be an alkaline water electrolytic cell, a proton exchange membrane water electrolytic cell, a high-temperature solid oxide water electrolytic cell, or a solid polymer anion exchange membrane water electrolytic cell; the steam generating device 590 can be a steam boiler or other device that can generate high-temperature steam.

[0068] In this embodiment, the first steam output terminal of the steam generating device 590 is connected to the electrolyte circulation system of the hydrogen production device. The steam generated by the steam generating device 590 can be input into the electrolyte circulation system through the first steam output terminal to increase the electrolyte temperature in the electrolytic cell 510.

[0069] The electrolyte circulation system is used to circulate the electrolyte. The electrolyte circulation system may include devices such as an electrolyte circulation pump, a hydrogen separator, and an oxygen separator. The electrolyte in the electrolyte circulation system flows into the electrolytic cell 510 and then flows out of the electrolytic cell 510 to achieve circulation.

[0070] When the electrolyte circulation system is working, the steam generated by the steam generating device 590 can be input into the electrolyte circulation system through the first steam output terminal. As the electrolyte in the electrolyte circulation system enters the electrolytic cell 510, the temperature of the electrolyte in the electrolytic cell 510 is increased.

[0071] The following is a specific example.

[0072] Before the electrolytic cell 510 is started, the temperature of the first electrolyte is obtained through the first temperature sensor 731. If the temperature of the first electrolyte is less than 50°C, the electrolytic cell 510 will not be started.

[0073] The steam generating device 590 generates steam with a first steam flow rate, the first switch valve 711 is opened, the second switch valve 712 is closed, and the steam is introduced into the manifold of the hydrogen separator 521 and the oxygen separator 522. The electrolyte circulation pump 540 is started. When the electrolyte temperature of the electrolyzer 510 rises to above 50°C, the first switch valve 711 is closed, the electrolyzer 510 is turned on, and the electrolyzer 510 enters the hydrogen production state.

[0074] According to the hydrogen production device provided in the embodiments of this application, the first steam output terminal of the steam generating device 590 is connected to the electrolyte circulation system, and steam is introduced into the electrolyte circulation system. The electrolyte in the electrolyzer 510 heats up rapidly, which can safely and efficiently improve the hydrogen production efficiency at startup and effectively shorten the time required for the hydrogen production device to produce hydrogen at full load.

[0075] In actual operation, the flow rate of steam generated by the steam generating device 590 can be calculated based on the heat demand of the electrolytic cell 510, and the steam generating device 590 can be controlled to generate steam at a certain flow rate to accurately match the heat demand and effectively improve energy utilization.

[0076] In some embodiments, when the electrolyzer 510 is not started to produce hydrogen, the first electrolyte temperature of the electrolyzer 510 is obtained; if the first electrolyte temperature is less than the target temperature threshold, the first steam flow rate is determined based on the first electrolyte temperature and the target temperature threshold; the steam generating device 590 is controlled to generate steam according to the first steam flow rate, and the steam is input to the electrolyte circulation system through the first steam output terminal to raise the electrolyte temperature of the electrolyzer 510.

[0077] In some embodiments, the hydrogen production apparatus may also include purification equipment.

[0078] In this embodiment, the electrolytic cell 510 is connected to the purification equipment, and the second steam output terminal of the steam generating device 590 is connected to the purification equipment.

[0079] Understandably, the purification equipment is used to remove impurities from the crude hydrogen or crude oxygen produced from the electrolyzer 510 to ensure the purity and quality of the product hydrogen and product oxygen. The purification equipment may include devices such as deoxygenators / dehydrogenators, dryers, gas-liquid separators, filters, and liquid collectors. The crude hydrogen or crude oxygen is processed sequentially by these devices to obtain high-purity product hydrogen and product oxygen.

[0080] In this embodiment, after the electrolyzer 510 starts producing hydrogen, the crude hydrogen and crude oxygen produced are respectively sent to their respective purification devices for purification. The second steam output end of the steam generating device 590 is connected to the purification device, and the steam generated by the steam generating device 590 can be input into the purification device to provide heat for the purification process.

[0081] In actual operation, the steam flow rate generated by the steam generating device 590 can be calculated based on the heat demand of the purification equipment, and the steam generating device 590 can be controlled to generate steam at a certain flow rate to accurately match the heat demand and effectively improve energy utilization.

[0082] In some embodiments, a first required heat of the purification device is obtained; a second steam flow rate is determined based on the first required heat of the device; and steam is generated by the steam generating device 590 according to the second steam flow rate and input to the purification device through the second steam output terminal.

[0083] In some embodiments, the current temperature information and set temperature information of the purification device are obtained, and the current operating status of the electrolytic cell 510 is obtained; based on the current temperature information, set temperature information and current operating status, the first required heat is determined.

[0084] The following section uses the purification of crude hydrogen as an example to introduce the process flow of the purification equipment.

[0085] like Figure 7 As shown, the gas phase exiting from the top of the first hydrogen gas-water separator 571 enters the second hydrogen gas-water separator 572. After separation, the gas phase enters the first heater 631 for heating, and then enters the deoxygenation tower 610 to remove trace amounts of oxygen from the hydrogen. Finally, it enters the first cooler 641 and the third hydrogen gas-water separator 573 for cooling and separation.

[0086] After cooling and separation, the product enters a three-tower drying process. The first drying tower 621, the second drying tower 622, and the third drying tower 623 perform adsorption, regeneration, and secondary adsorption, respectively. The periodic operation is achieved through the valves installed in the first drying tower 621, the second drying tower 622, and the third drying tower 623.

[0087] Taking the first drying tower 621 as the adsorption state, the second drying tower 622 as the regeneration state, and the third drying tower 623 as the secondary adsorption state as an example, the drying process is explained as follows: After deoxygenation and cooling separation, the gas phase enters the first drying tower 621 and exits from the bottom of the first drying tower 621. Part of it leaves the device as product gas, and the other part enters the second heater 632 as regeneration gas. After being heated, it enters the bottom of the second drying tower 622, where the adsorbent inside the second drying tower 622 is heated to desorb the adsorbed moisture. Then, it enters the second cooler 642 and the fourth hydrogen gas-water separator 574, and then enters the top of the third drying tower 623 again. After the adsorbent there adsorbs the moisture, it leaves the purification equipment as product gas. In addition, when the outlet temperature of the second drying tower 622 reaches a certain temperature, the second heater 632 stops heating and the second drying tower 622 is cooled to room temperature before switching to state two.

[0088] In this embodiment, when crude hydrogen enters the purification process, the steam flow rate is automatically matched according to the current operating status of the electrolyzer 510 and the purification temperature requirements (current temperature information and set temperature information). The steam generating device 590 is controlled to generate steam according to the second steam flow rate. The first switch valve 711 is closed, and the second switch valve 712, the third switch valve 713 and the regulating valve 720 are opened, so that the steam enters the first heater 631 and the second heater 632.

[0089] Taking state one as an example, the first drying tower 621 is in the adsorption state, the second drying tower 622 is in the regeneration state, and the third drying tower 623 is in the secondary adsorption state. The hydrogen gas before the deoxygenation tower 610 and the regenerated hydrogen gas are heated respectively. The regulating valve 720 is adjusted to the set temperature according to the second temperature sensor 732 at the outlet of the deoxygenation tower 610. The third switching valve 713 is selected to open or close according to the temperature value of the third temperature sensor 733 at the outlet of the second drying tower 622.

[0090] When the temperature value of the third temperature sensor 733 does not reach the set value required for heating, the third switch valve 713 opens. When the temperature value of the third temperature sensor 733 reaches the set value, the third switch valve 713 closes. At this time, the second drying tower 622 enters the cold blowing stage.

[0091] In some embodiments, such as Figure 8 As shown, the third steam output terminal of the steam generating device 590 is connected to the heat demand terminal 650. The steam generating device 590 generates steam, which is input to the heat demand terminal 650 through the third steam output terminal.

[0092] In actual implementation, the heat-requiring end 650 can be a heating device, a heat preservation device, or other water electrolysis device, etc.

[0093] Understandably, the steam flow rate generated by the steam generating device 590 can also be calculated based on the heat demand of the heat demand end 650, and the steam generating device 590 can be controlled to generate steam at a certain flow rate to accurately match the heat demand and effectively improve energy utilization.

[0094] In some embodiments, a second heat demand of the heat demand end 650 is obtained; a third steam flow rate is determined based on the second heat demand; and steam is generated by the steam generating device 590 according to the third steam flow rate and input to the heat demand end 650 through the third steam output end.

[0095] In some embodiments, the hydrogen production apparatus may further include: a hydrogen separator 521 and an oxygen separator 522, wherein the input end of the hydrogen separator 521 is connected to the hydrogen output end of the electrolyzer 510, and the input end of the oxygen separator 522 is connected to the oxygen output end of the electrolyzer 510.

[0096] Hydrogen separator 521 and oxygen separator 522 are connected by a manifold, and the first steam output end is connected to the manifold.

[0097] like Figure 5 As shown, the steam generating device 590 generates steam, the first switch valve 711 is opened, the second switch valve 712 is closed, and the steam is introduced into the manifold of the hydrogen separator 521 and the oxygen separator 522. The electrolyte circulation pump 540 is started, and the steam enters the electrolyte circulation system. As the electrolyte circulation system enters the electrolytic cell 510, when the electrolyte temperature in the electrolytic cell 510 rises to the target temperature threshold, the electrolytic cell 510 can be turned on to produce hydrogen.

[0098] In some embodiments, the hydrogen production apparatus may further include: a hydrogen separator 521 and an oxygen separator 522, wherein the input end of the hydrogen separator 521 is connected to the hydrogen output end of the electrolyzer 510, and the input end of the oxygen separator 522 is connected to the oxygen output end of the electrolyzer 510.

[0099] The first steam output end is connected to hydrogen separator 521 and oxygen separator 522 respectively.

[0100] like Figure 6 As shown, the steam generating device 590 generates steam, the first switch valve 711 is opened, the second switch valve 712 is closed, and the steam is directly introduced into the balance pipe between the hydrogen separator 521 and the oxygen separator 522. The steam enters the hydrogen separator 521 and the oxygen separator 522 respectively. The electrolyte circulation pump 540 is started. When the electrolyte temperature of the electrolyzer 510 rises to the target temperature threshold, the electrolyzer 510 can be turned on to produce hydrogen.

[0101] This application also provides a method for controlling a hydrogen production device.

[0102] The control method for the hydrogen production device can be applied to the aforementioned hydrogen production device, and can be executed by the hardware or software within the hydrogen production device.

[0103] like Figure 1 As shown, the control method of the hydrogen production device includes steps 110, 120, 130 and 140.

[0104] Step 110: Obtain the temperature of the first electrolyte in the electrolyzer 510 when hydrogen production is not started in the electrolyzer 510.

[0105] In this embodiment, the temperature of the electrolyte in the electrolyzer 510, i.e., the first electrolyte temperature, is obtained before the electrolyzer 510 starts producing hydrogen.

[0106] In actual implementation, a first temperature sensor 731 can be installed on the electrolytic cell 510 to monitor the temperature of the electrolyte in the electrolytic cell 510 in real time.

[0107] Step 120: If the temperature of the first electrolyte is less than the target temperature threshold, determine the first steam flow rate based on the first electrolyte temperature and the target temperature threshold.

[0108] The target temperature threshold is a preset critical value for electrolyte temperature.

[0109] It should be noted that when the temperature of the electrolyte in the electrolyzer 510 is lower than the target temperature threshold, starting the electrolyzer 510 to produce hydrogen is called a cold start, which cannot quickly reach full load and has low hydrogen production efficiency. When the temperature of the electrolyte in the electrolyzer 510 is greater than or equal to the target temperature threshold, starting the electrolyzer 510 to produce hydrogen is called a hot start, which allows the electrolyzer 510 to quickly reach full load and has high hydrogen production efficiency.

[0110] In actual operation, the target temperature thresholds for different types of electrolyzers 510 are different. For example, for alkaline water electrolyzers, the target temperature threshold can be 45℃-55℃. Hydrogen production can start when the electrolyte temperature is around 50℃, and hydrogen production can be completed quickly at full load.

[0111] In this step, when the temperature of the first electrolyte is lower than the target temperature threshold, the electrolytic cell 510 is not started. Based on the temperature of the first electrolyte and the target temperature threshold, the required heat for the electrolytic cell 510 to reach the hot start condition is calculated, and the first steam flow rate is determined based on the required heat.

[0112] Step 130: Steam is generated by the steam generating device 590 according to the first steam flow rate, and input into the electrolyte circulation system through the first steam output terminal to raise the electrolyte temperature of the electrolytic cell 510.

[0113] In this embodiment, the steam generating device 590 generates steam with a first steam flow rate, which is input to the electrolyte circulation system through the first steam output terminal. As the electrolyte in the electrolyte circulation system enters the electrolytic cell 510, the electrolyte temperature of the electrolytic cell 510 is increased, so that the electrolytic cell 510 can reach the hot start condition.

[0114] It should be noted that the steam generated by the steam generating device 590 exchanges heat with the electrolyte in the electrolyte circulation system, that is, the steam is introduced into the electrolyte, which can effectively improve the heat transfer efficiency and the electrolytic cell 510 can reach the hot start-up conditions more quickly.

[0115] Step 140: When the electrolyte temperature of the electrolyzer 510 is greater than or equal to the target temperature threshold, control the electrolyzer 510 to start hydrogen production.

[0116] In this step, during the process of steam generating the first steam flow rate from the steam generating device 590 being input into the electrolyte circulation system, the temperature of the electrolyte in the electrolyzer 510 is monitored in real time. When the electrolyte temperature in the electrolyzer 510 is greater than or equal to the target temperature threshold, it indicates that the electrolyzer 510 has reached the hot start condition. The electrolyzer 510 is then controlled to start hydrogen production, and the electrolyzer 510 can quickly produce hydrogen at full capacity, effectively improving the hydrogen production efficiency.

[0117] The following section provides a detailed description of the hydrogen production process in electrolyzer 510, using a target temperature threshold of 50℃ as an example.

[0118] like Figure 5 As shown, before the electrolytic cell 510 is turned on, the temperature of the first electrolyte is obtained through the first temperature sensor 731. If the temperature of the first electrolyte is less than 50°C, the electrolytic cell 510 will not be turned on.

[0119] The steam generating device 590 generates steam at a first steam flow rate, opens the first switch valve 711, closes the second switch valve 712, and introduces the steam into the manifold of the hydrogen separator 521 and the oxygen separator 522. After passing through the electrolyte heat exchanger 530, the electrolyte circulation pump 540 is started. When the electrolyte temperature of the electrolyzer 510 rises to above 50°C, the first switch valve 711 is closed, the electrolyzer 510 is opened, and the electrolyzer 510 enters the hydrogen production state.

[0120] The hydrogen and electrolyte produced by electrolysis in electrolytic cell 510 enter hydrogen separator 521 to separate crude hydrogen and electrolyte. The oxygen and electrolyte produced by electrolysis in electrolytic cell 510 enter oxygen separator 522 to separate crude oxygen and electrolyte.

[0121] The electrolyte separated from hydrogen separator 521 and oxygen separator 522 is combined through a manifold and enters the electrolysis heat exchanger. After being pressurized by electrolyte circulation pump 540, it returns to the inlet of electrolysis cell 510.

[0122] The gas phases exiting from the top of hydrogen separator 521 and oxygen separator 522 enter hydrogen scrubber 551 and oxygen scrubber 552 respectively. The liquid phases washed by hydrogen scrubber 551 overflow back into hydrogen separator 521, and the liquid phases washed by oxygen scrubber 552 overflow back into oxygen separator 522.

[0123] The gas phase washed by the hydrogen scrubber 551 enters the hydrogen heat exchanger 561 for cooling, and then enters the first hydrogen gas-water separator 571 to separate crude hydrogen. The crude hydrogen then enters the purification process to obtain product hydrogen.

[0124] After being washed by the oxygen scrubber 552, the gas phase enters the oxygen heat exchanger 562 for cooling, and then enters the first oxygen gas-water separator 580 to separate crude oxygen. The crude oxygen then enters the purification process to obtain product oxygen.

[0125] In the electrolytic hydrogen production process, the cold start time is relatively long. During cold start, the electrolyzer 510 cannot quickly reach full capacity to produce hydrogen, resulting in low hydrogen production efficiency and poor coupling with renewable energy sources. In addition, the hydrogen produced by electrolysis at the beginning of cold start is substandard hydrogen, which needs to be vented, significantly reducing hydrogen production efficiency.

[0126] In related technologies, electric heating is used to solve the problem of insufficient hydrogen production during cold start and low hydrogen production efficiency. However, electric heating has low heat transfer efficiency, and the heating process also heats the hydrogen, posing certain safety risks. At the same time, electric heating also affects the performance of the electrolyzer 510.

[0127] In this embodiment, before the electrolyzer 510 is started, it is determined whether the electrolyte temperature has reached the target temperature threshold. If it has not reached the target temperature threshold, the steam generating device 590 is turned on. Based on the first electrolyte temperature and the target temperature threshold, the first steam flow rate is calculated, and the steam flow rate is accurately matched, resulting in high energy utilization. Steam is introduced into the electrolyte circulation system. As the electrolyte in the electrolyte circulation system enters the electrolyzer 510, the electrolyte temperature in the electrolyzer 510 is increased. The heat transfer efficiency of steam contacting the electrolyte is high, and the safety of steam heating is also higher, without affecting the performance of the electrolyzer 510. The electrolyte in the electrolyzer 510 heats up rapidly, greatly shortening the time required for the electrolyzer 510 to reach full-load hydrogen production, which can safely and efficiently improve the hydrogen production efficiency during startup.

[0128] According to the control method of the hydrogen production device provided in the embodiments of this application, before starting hydrogen production in the electrolyzer 510, the steam flow rate is precisely matched according to the temperature of the first electrolyte and the target temperature threshold, and the steam is introduced into the electrolyte circulation system. The electrolyte in the electrolyzer 510 heats up rapidly, which can safely and efficiently improve the hydrogen production efficiency at startup and effectively shorten the time required for the hydrogen production device to produce hydrogen at full load.

[0129] In some embodiments, the hydrogen production apparatus further includes a purification device, with the electrolyzer 510 connected to the purification device and the second steam output terminal of the steam generating device 590 connected to the purification device. After the electrolyzer 510 is started to produce hydrogen, as follows: Figure 2 As shown, the control method for a hydrogen production unit may further include:

[0130] Step 210: Obtain the first required heat for the purification equipment;

[0131] Step 220: Determine the second steam flow rate based on the first required heat.

[0132] Step 230: Steam is generated by controlling the steam generating device 590 according to the second steam flow rate, and input into the purification equipment through the second steam output terminal.

[0133] Understandably, the purification equipment is used to remove impurities from the crude hydrogen or crude oxygen produced from the electrolyzer 510 to ensure the purity and quality of the product hydrogen and product oxygen. The purification equipment may include devices such as deoxygenators / dehydrogenators, dryers, gas-liquid separators, filters, and liquid collectors. The crude hydrogen or crude oxygen is processed sequentially by these devices to obtain high-purity product hydrogen and product oxygen.

[0134] In this embodiment, after the electrolyzer 510 starts producing hydrogen, the crude hydrogen and crude oxygen produced are respectively sent to their respective purification devices for purification. The second steam output end of the steam generating device 590 is connected to the purification device, and the steam generated by the steam generating device 590 can be input into the purification device to provide heat for the purification process.

[0135] The primary heat requirement is the heat needed for the purification equipment to perform the purification process.

[0136] In this embodiment, a second steam flow rate is calculated based on the first heat requirement of the purification equipment. Steam is generated by the steam generating device 590 according to the second steam flow rate and input into the purification equipment to provide heat for the purification process. The heat provided by the second steam flow rate is precisely matched with the heat required for the purification process, effectively improving the energy utilization rate of steam heating.

[0137] In some embodiments, obtaining the first required heat for the purification device includes:

[0138] Obtain the current temperature and set temperature information of the purification equipment, and obtain the current operating status of the electrolytic cell 510;

[0139] Based on the current temperature information, the set temperature information, and the current operating status, determine the primary heat requirement.

[0140] The current operating status of the electrolyzer 510 is a parameter used to characterize the current hydrogen production status of the electrolyzer 510. The current operating status may include parameters such as the current hydrogen production power and the current hydrogen production output.

[0141] It is understandable that the set temperature information of the purification equipment is the preset temperature value that the purification equipment needs to reach to perform the purification process.

[0142] In this embodiment, the purification equipment purifies the crude hydrogen or crude oxygen produced by the electrolytic cell 510. Based on the current operating status of the electrolytic cell 510, the amount of crude hydrogen or crude oxygen to be purified can be determined. Based on the current temperature information, the set temperature information, and the current operating status, the heat required by the purification equipment to purify the currently produced crude hydrogen or crude oxygen, i.e., the first required heat, can be calculated.

[0143] The following section uses the purification of crude hydrogen as an example to introduce the process flow of the purification equipment.

[0144] like Figure 7 As shown, the gas phase exiting from the top of the first hydrogen gas-water separator 571 enters the second hydrogen gas-water separator 572. After separation, the gas phase enters the first heater 631 for heating, and then enters the deoxygenation tower 610 to remove trace amounts of oxygen from the hydrogen. Finally, it enters the first cooler 641 and the third hydrogen gas-water separator 573 for cooling and separation.

[0145] After cooling and separation, the product enters a three-tower drying process. The first drying tower 621, the second drying tower 622, and the third drying tower 623 perform adsorption, regeneration, and secondary adsorption, respectively. The periodic operation is achieved through the valves installed in the first drying tower 621, the second drying tower 622, and the third drying tower 623.

[0146] In actual implementation, the three-tower drying process has three states: State 1, the first drying tower 621 is in the adsorption state, the second drying tower 622 is in the regeneration state, and the third drying tower 623 is in the secondary adsorption state; State 2, the first drying tower 621 is in the secondary adsorption state, the second drying tower 622 is in the adsorption state, and the third drying tower 623 is in the regeneration state; State 3, the first drying tower 621 is in the regeneration state, the second drying tower 622 is in the secondary adsorption state, and the third drying tower 623 is in the adsorption state; the three states are switched cyclically.

[0147] Taking state one as an example, the drying process is described as follows: After deoxygenation and cooling separation, the gas phase enters the first drying tower 621 and exits from the bottom of the first drying tower 621. Part of it leaves the device as product gas, and the other part enters the second heater 632 as regeneration gas. After being heated, it enters the bottom of the second drying tower 622. After the adsorbent inside the second drying tower 622 is heated to desorb the adsorbed water, it enters the second cooler 642 and the fourth hydrogen gas-water separator 574, and then enters the top of the third drying tower 623 again. After the adsorbent there adsorbs the water, it leaves the purification equipment as product gas. In addition, when the outlet temperature of the second drying tower 622 reaches a certain temperature, the second heater 632 stops heating and the second drying tower 622 is cooled to room temperature before switching to state two.

[0148] In this embodiment, when crude hydrogen enters the purification process, the steam flow rate is automatically matched according to the current operating status of the electrolyzer 510 and the purification temperature requirements (current temperature information and set temperature information). The steam generating device 590 is controlled to generate steam according to the second steam flow rate. The first switch valve 711 is closed, and the second switch valve 712, the third switch valve 713 and the regulating valve 720 are opened, so that the steam enters the first heater 631 and the second heater 632.

[0149] Taking state one as an example, the first drying tower 621 is in the adsorption state, the second drying tower 622 is in the regeneration state, and the third drying tower 623 is in the secondary adsorption state. The hydrogen gas before the deoxygenation tower 610 and the regenerated hydrogen gas are heated respectively. The regulating valve 720 is adjusted to the set temperature according to the second temperature sensor 732 at the outlet of the deoxygenation tower 610. The third switching valve 713 is selected to open or close according to the temperature value of the third temperature sensor 733 at the outlet of the second drying tower 622.

[0150] When the temperature value of the third temperature sensor 733 does not reach the set value required for heating, the third switch valve 713 opens. When the temperature value of the third temperature sensor 733 reaches the set value, the third switch valve 713 closes. At this time, the second drying tower 622 enters the cold blowing stage.

[0151] In practice, the second required heat supply to the purification equipment can be calculated using the following formula:

[0152] M2Q=C 氢气 ×M 氢气 ×(T 脱氧塔出口设定值 -40)+C 氢气 ×M 再生氢气 ×(T 再生塔出口设定值 -25)

[0153]

[0154] Among them, C 氢气M is the specific heat capacity of hydrogen. 氢气 The mass flow rate of hydrogen produced by electrolysis is given by n, where n is the number of chambers in electrolysis cell 510, I is the operating current of electrolysis cell 510, η is the current efficiency of electrolysis cell 510, and M is the mass flow rate of hydrogen produced by electrolysis. 再生氢气 T is the mass flow rate of regenerated hydrogen. 脱氧塔出口设定值 The setpoint for the outlet temperature of deoxidizer 610, i.e., the setpoint for the second temperature sensor 732, is T. 再生塔出口设定值 This is the set value for the outlet temperature of the regeneration tower (the regeneration tower in state one is the second drying tower 622).

[0155] It should be noted that 40 indicates that the outlet gas phase temperature of the second hydrogen gas-water separator 572 is 40°C, and 25 indicates the gas phase temperature entering the inlet of the second heater 632.

[0156] In this embodiment, M2 is the second steam flow rate, Q is the heat per unit mass of steam, and M2Q can be used as the second required heat.

[0157] In actual operation, the mass flow rate of regenerated hydrogen can be detected by the regenerated gas flow meter 740, and the mass flow rate of hydrogen produced by electrolysis can be calculated based on parameters of the current operating status of the electrolyzer 510, such as the current efficiency, operating current, and number of chambers.

[0158] In some embodiments, the third steam output end of the steam generating device 590 is connected to the heat demand end 650, such as... Figure 3 As shown, the control method for a hydrogen production unit may further include:

[0159] Step 310: Obtain the second required heat at the heat-requiring end 650;

[0160] Step 320: Determine the third steam flow rate based on the second required heat.

[0161] Step 330: Steam is generated by the steam generating device 590 according to the third steam flow control, and input to the heat demand end 650 through the third steam output end.

[0162] The second heat demand is the heat required at the heat demand end 650.

[0163] In actual implementation, the heat-requiring end 650 can be a heating device, a heat preservation device, or other water electrolysis device, etc.

[0164] In this embodiment, the third steam flow rate is calculated based on the second heat demand of the heat demand end 650. The steam generating device 590 is controlled to generate steam and output it to the heat demand end 650 according to the third steam flow rate. The heat provided by the third steam flow rate is precisely matched with the heat demand end 650, which effectively improves the energy utilization rate of steam heating.

[0165] In some embodiments, step 120, determining the first steam flow rate based on the first electrolyte temperature and the target temperature threshold, may include:

[0166] Application formula

[0167]

[0168] Determine the first steam flow rate;

[0169] Where M is the first steam flow rate, Q is the heat per unit mass of steam, T1 is the first electrolyte temperature, T2 is the target temperature threshold, and M 电解液 denoted as , where is the electrolyte mass flow rate of the electrolyte circulation system, and k is the specific heat capacity of the electrolyte.

[0170] In actual implementation, k can be a positive number greater than 1, and T2≥50℃.

[0171] For example, when k = 3.1, and the temperature of the first electrolyte has not reached T2 = 50℃, the first steam flow rate is calculated using the following formula:

[0172]

[0173] Where M is the first steam flow rate, Q is the heat per unit mass of steam, and T1 is the first electrolyte temperature. 电解液 This refers to the electrolyte mass flow rate of the electrolyte circulation system.

[0174] In some embodiments, after step 110, obtaining the first electrolyte temperature of the electrolyzer 510, the control method for the hydrogen production device may further include:

[0175] When the temperature of the first electrolyte is greater than or equal to the target temperature threshold, control the electrolyzer 510 to start hydrogen production.

[0176] In this embodiment, before the electrolyzer 510 starts producing hydrogen, the temperature of the first electrolyte is greater than or equal to the target temperature threshold, and the electrolyzer 510 has reached the hot start condition. The electrolyzer 510 is directly controlled to start producing hydrogen, and the electrolyzer 510 can quickly produce hydrogen at full load.

[0177] In this embodiment, before the electrolyzer 510 is started, it is determined whether the electrolyte temperature has reached the target temperature threshold. If it has, the electrolyzer 510 is controlled to start producing hydrogen. If it has not, the steam generating device 590 is turned on. Based on the first electrolyte temperature and the target temperature threshold, the first steam flow rate is calculated and precisely matched. The steam is introduced into the electrolyte circulation system. As the electrolyte in the electrolyte circulation system enters the electrolyzer 510, the electrolyte temperature in the electrolyzer 510 is increased. The heat transfer efficiency of the steam contacting the electrolyte is high, and the electrolyte in the electrolyzer 510 heats up rapidly, which greatly shortens the time required for the electrolyzer 510 to reach full-load hydrogen production. This can safely and efficiently improve the hydrogen production efficiency during startup.

[0178] The control method for a hydrogen production device provided in this application embodiment can be executed by a control device 400 of the hydrogen production device. This application embodiment uses the control device 400 of the hydrogen production device executing the control method as an example to illustrate the control device 400 of the hydrogen production device provided in this application embodiment.

[0179] This application embodiment also provides a control device 400 for a hydrogen production device. The hydrogen production device includes an electrolyzer 510 and a steam generating device 590. The first steam output end of the steam generating device 590 is connected to the electrolyte circulation system of the hydrogen production device.

[0180] like Figure 4 As shown, the control device 400 of the hydrogen production unit includes:

[0181] The acquisition module 410 is used to acquire the first electrolyte temperature of the electrolyzer 510 when the electrolyzer 510 is not started to produce hydrogen;

[0182] The first processing module 420 is used to determine the first steam flow rate based on the first electrolyte temperature and the target temperature threshold when the first electrolyte temperature is less than the target temperature threshold.

[0183] The second processing module 430 is used to control the steam generating device 590 to generate steam according to the first steam flow rate, and input the steam to the electrolyte circulation system through the first steam output terminal to raise the electrolyte temperature of the electrolytic cell 510.

[0184] The third processing module 440 is used to control the electrolyzer 510 to start hydrogen production when the electrolyte temperature of the electrolyzer 510 is greater than or equal to the target temperature threshold.

[0185] According to the control device 400 of the hydrogen production device provided in the embodiments of this application, before starting hydrogen production in the electrolyzer 510, the steam flow rate is precisely matched according to the first electrolyte temperature and the target temperature threshold, and the steam is introduced into the electrolyte circulation system. The electrolyte in the electrolyzer 510 can be heated rapidly, which can safely and efficiently improve the hydrogen production efficiency at startup and effectively shorten the time required for the hydrogen production device to produce hydrogen at full load.

[0186] In some embodiments, the hydrogen production apparatus further includes a purification device, an electrolyzer 510 is connected to the purification device, and a second steam output terminal of a steam generating device 590 is connected to the purification device after controlling the electrolyzer 510 to start hydrogen production;

[0187] The acquisition module 410 is also used to acquire the first required heat of the purification equipment;

[0188] The first processing module 420 is also used to determine the second steam flow rate based on the first required heat.

[0189] The second processing module 430 is also used to control the steam generating device 590 to generate steam according to the second steam flow rate, and input the steam to the purification equipment through the second steam output terminal.

[0190] In some embodiments, the acquisition module 410 is used to acquire the first required heat of the purification device, including:

[0191] Obtain the current temperature and set temperature information of the purification equipment, and obtain the current operating status of the electrolytic cell 510;

[0192] Based on the current temperature information, the set temperature information, and the current operating status, determine the primary heat requirement.

[0193] In some embodiments, the third steam output end of the steam generating device 590 is connected to the heat demand end 650.

[0194] The acquisition module 410 is also used to acquire the second required heat at the heat-demanding end 650;

[0195] The first processing module 420 is also used to determine the third steam flow rate based on the second required heat.

[0196] The second processing module 430 is also used to control the steam generating device 590 to generate steam according to the third steam flow rate, and input the steam to the heat demand end 650 through the third steam output terminal.

[0197] In some embodiments, the first processing module 420 is used to apply formulas.

[0198]

[0199] Determine the first steam flow rate;

[0200] Where M is the first steam flow rate, Q is the heat per unit mass of steam, T1 is the first electrolyte temperature, T2 is the target temperature threshold, and M 电解液 denoted as , where is the electrolyte mass flow rate of the electrolyte circulation system, and k is the specific heat capacity of the electrolyte.

[0201] In some embodiments, after obtaining the first electrolyte temperature of the electrolyzer 510, the third processing module 440 is further configured to control the electrolyzer 510 to start hydrogen production if the first electrolyte temperature is greater than or equal to the target temperature threshold.

[0202] The control device 400 of the hydrogen production apparatus provided in this application embodiment can realize the various processes implemented in the above-described hydrogen production apparatus control method embodiment. To avoid repetition, it will not be described again here.

[0203] In the hydrogen production unit, the first steam output end of the steam generating device 590 is connected to the electrolyte circulation system, and the control device 400 can be electrically connected to the electrolyzer 510 and the steam generating device 590.

[0204] In this embodiment, the control device 400 can control the electrolyzer 510 to produce hydrogen and the steam generating device 590 to generate steam. The first steam output terminal of the steam generating device 590 is connected to the electrolyte circulation system. The steam generated by the steam generating device 590 can be input into the electrolyte circulation system through the first steam output terminal to increase the electrolyte temperature in the electrolyzer 510.

[0205] In some embodiments, such as Figure 9 As shown, this application embodiment also provides an electronic device 900, including a processor 901, a memory 902, and a computer program stored in the memory 902 and executable on the processor 901. When the program is executed by the processor 901, it implements the various processes of the control method embodiment of the hydrogen production device described above and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0206] It should be noted that the electronic devices in the embodiments of this application include the mobile electronic devices and non-mobile electronic devices described above.

[0207] This application also provides a non-transitory computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it implements the various processes of the control method embodiment of the hydrogen production device described above and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0208] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0209] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the control method of the hydrogen production device described above.

[0210] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0211] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the control method embodiment of the hydrogen production device described above, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0212] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0213] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0214] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0215] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

[0216] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0217] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A hydrogen production apparatus, characterized in that, include: Electrolytic cell; A steam generating device is provided, wherein the first steam output end of the steam generating device is connected to the electrolyte circulation system of the hydrogen production device, and the steam generated by the steam generating device is input into the electrolyte circulation system through the first steam output end to raise the electrolyte temperature of the electrolytic cell.

2. The hydrogen production apparatus according to claim 1, characterized in that, Also includes: The purification equipment includes an electrolytic cell connected to the purification equipment and a second steam output terminal of a steam generating device connected to the purification equipment.

3. The hydrogen production apparatus according to claim 1, characterized in that, The steam generating device further includes a third steam output terminal, which is connected to the heat demand terminal.

4. The hydrogen production apparatus according to any one of claims 1-3, characterized in that, Also includes: A hydrogen separator and an oxygen separator are provided, wherein the input end of the hydrogen separator is connected to the hydrogen output end of the electrolytic cell, and the input end of the oxygen separator is connected to the oxygen output end of the electrolytic cell. The hydrogen separator and the oxygen separator are connected by a manifold, and the first steam output end is connected to the manifold.

5. The hydrogen production apparatus according to any one of claims 1-3, characterized in that, Also includes: A hydrogen separator and an oxygen separator are provided, wherein the input end of the hydrogen separator is connected to the hydrogen output end of the electrolytic cell, and the input end of the oxygen separator is connected to the oxygen output end of the electrolytic cell. The first steam output terminal is connected to the hydrogen separator and the oxygen separator, respectively.

6. A control method for a hydrogen production device, characterized in that, The hydrogen production device includes an electrolyzer and a steam generating device, wherein a first steam output terminal of the steam generating device is connected to the electrolyte circulation system of the hydrogen production device, and the method includes: When the electrolyzer is not in operation to produce hydrogen, the temperature of the first electrolyte in the electrolyzer is obtained. If the temperature of the first electrolyte is lower than the target temperature threshold, the first steam flow rate is determined based on the temperature of the first electrolyte and the target temperature threshold. Steam is generated by the steam generating device according to the first steam flow rate and input into the electrolyte circulation system through the first steam output terminal to raise the electrolyte temperature of the electrolytic cell. When the electrolyte temperature in the electrolyzer is greater than or equal to the target temperature threshold, the electrolyzer is controlled to start hydrogen production.

7. The control method for the hydrogen production apparatus according to claim 6, characterized in that, The hydrogen production device further includes a purification unit, the electrolyzer is connected to the purification unit, and the second steam output terminal of the steam generating device is connected to the purification unit. After controlling the electrolyzer to start hydrogen production, the method further includes: Obtain the first required heat from the purification device; Based on the first required heat, determine the second steam flow rate; Steam is generated by the steam generating device according to the second steam flow rate and input to the purification equipment through the second steam output terminal.

8. The control method for the hydrogen production apparatus according to claim 7, characterized in that, The first required heat for obtaining the purification equipment includes: Obtain the current temperature information and set temperature information of the purification equipment, and obtain the current operating status of the electrolytic cell; Based on the current temperature information, the set temperature information, and the current operating status, the first required heat is determined.

9. The control method for the hydrogen production apparatus according to claim 6, characterized in that, The third steam output terminal of the steam generating device is connected to the heat demand terminal, and the method further includes: Obtain the second required heat at the heat-demanding end; The third steam flow rate is determined based on the second required heat. Steam is generated by the steam generating device according to the third steam flow rate and input to the heat demand end through the third steam output terminal.

10. The control method for a hydrogen production apparatus according to any one of claims 6-9, characterized in that, After obtaining the first electrolyte temperature of the electrolytic cell, the method further includes: When the temperature of the first electrolyte is greater than or equal to the target temperature threshold, the electrolyzer is controlled to start hydrogen production.

11. A control device for a hydrogen production apparatus, characterized in that, The hydrogen production device includes an electrolyzer and a steam generating device. The first steam output terminal of the steam generating device is connected to the electrolyte circulation system of the hydrogen production device. The control device includes: The acquisition module is used to acquire the first electrolyte temperature of the electrolyzer when the electrolyzer is not started to produce hydrogen. The first processing module is configured to determine the first steam flow rate based on the first electrolyte temperature and the target temperature threshold when the first electrolyte temperature is less than the target temperature threshold. The second processing module is used to control the steam generating device to generate steam according to the first steam flow rate, and input the steam to the electrolyte circulation system through the first steam output terminal to raise the electrolyte temperature of the electrolytic cell; The third processing module is used to control the electrolyzer to start hydrogen production when the electrolyte temperature of the electrolyzer is greater than or equal to the target temperature threshold.

12. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the control method for the hydrogen production device as described in any one of claims 6-10.

13. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the computer program implements the control method for the hydrogen production apparatus as described in any one of claims 6-10.

14. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the control method for the hydrogen production apparatus as described in any one of claims 6-10.

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